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Black square mini PC barebone with top ventilation grill

ASRock Industrial

ASRock Industrial 4X4 BOX-8840U barebone mini PC

SKU CH-3PDZ-6GPMW MPN 4X4 BOX-8840U

Barebone mini PC with AMD Ryzen 7 8840U, Radeon graphics, dual DDR5 SO-DIMM slots up to 96 GB, two USB4 ports, dual M.2 Key M slots, 2.5 GbE plus Gigabit LAN, Wi-Fi 6E and Bluetooth 5.2

  • ProcessorAMD Ryzen 7 8840U
  • Wi-Fi standardWi-Fi 6E
  • Installed memoryNo Memory
  • RAM slots2 × 262Pin SO-DIMM
  • Supported memoryDDR5 5600
  • Maximum supported memory96 GB

CPU Type AMD Ryzen 7 8840U

  • AMD Ryzen 7 8840U with 8 Zen 4 cores and 16 threads for high multi-thread performance
  • AMD Radeon 700M graphics with Ryzen AI up to 39 total TOPS for accelerated generative AI workloads
  • Dual-channel DDR5 5600 SO-DIMM slots supporting up to 96 GB for fast memory bandwidth
  • Dual M.2 Key M slots with PCIe Gen4 x4 for high-speed SSD expansion
  • 5 GbE and 1 GbE LAN plus Wi-Fi 6E and Bluetooth 5.2 for versatile connectivity

AMD Ryzen 7 8840U barebone mini PC

The ASRock Industrial 4X4 BOX-8840U is a compact barebone system built around an AMD Ryzen 7 8840U processor with 8 Zen 4 cores and 16 threads. It targets builders who want a small-footprint platform for AI-accelerated workloads, multi-display setups or general productivity. Memory, storage and an operating system must be supplied by the buyer.

Sustained-load behaviour

The integrated AMD Radeon 700M graphics and a 16 TOPS NPU combine for 39 total TOPS, delivering a 1.6x uplift in AI throughput versus the previous generation. Dual-channel DDR5 5600 support up to 96 GB helps keep data flowing during extended inference or rendering sessions, while the fanned chassis is designed to dissipate heat continuously rather than throttle under prolonged load.

Compatibility checks before ordering

Verify that your chosen SO-DIMM modules are DDR5 5600 and do not exceed 48 GB per slot for the 96 GB maximum. Confirm the M.2 Key M drives you intend to use match the 2242 or 2280 form factors supported by the two PCIe Gen4x4 slots. The 19 V power adapter is included, so ensure your AC mains cable suits the local socket. Quad-display output requires monitors compatible with HDMI 2.1 or DisplayPort 1.4a over the two USB4 Type-C ports.

How it compares

Measured against everything we stock in Mini PC Barebone Systems, at today’s prices. Recalculated every night.

Price $483.99
Cheaper than about 61% of the 1,735 comparable items (median $564.99).

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Specifications

Product
Brand nameASRock Industrial
Model name4 × 4 BOX-8840U
Product colorBlack
Processor
ProcessorAMD Ryzen 7 8840U
Memory
Installed memoryNo Memory
RAM slots2 × 262Pin SO-DIMM
Supported memoryDDR5 5600
Maximum supported memory96 GB
Dual-channel supportYes
Storage
Installed storageNo Hard Drive
M.2 slots1 x M.2 (KEY M, 2242/2280) with PCIe Gen4 × 4 for SSD
1 x M.2 (KEY M, 2242) with PCIe Gen4 × 4 for SSD
Graphics
Built-in graphicsAMD Radeon Graphics
Audio & video
Built-in audioRealtek ALC256
Connectivity
LAN connectionLAN1: Realtek RTL8125BG with 10/100/1000/2500 Mbit/s
LAN2: Realtek RTL8111H with 10/100/1000 Mbit/s
Maximum network speed2.5 Gbit/s
Wi-Fi standard802.11ax
Bluetooth support5.2
Ports & slots
Front USB ports1 x USB 3.2 Gen2 (Type-A)
2 x USB4 (Supports DP1.4a display output)
Front audio jacks1 (headphone & microphone jack)
HDMI ports2 x HDMI 2.1
Ethernet port1 × 1 Gigabit LAN, 1 × 2.5 Gigabit LAN
Power
Power supply12 V~24 V DC-In Jack
Size & build
Product dimensions4.63 in × 4.33 in × 1.93 in
Product weight2.2 lb (1 kg)
Shipping weight1.41 kg
Package size229 × 140 × 114 mm

Other versions of this model

1 more in the same range

Questions about this item

Does the 4X4 BOX-8840U run loudly or get hot when the Ryzen 7 8840U is under sustained load?

The unit uses an active cooling system designed for the 19V power adapter and the 8-core Zen 4 processor, keeping thermals in check during extended workloads.

Which DDR5 SO-DIMMs and M.2 SSDs do I need to add before the 4X4 BOX-8840U will boot?

You must supply two 262-pin DDR5 5600 SO-DIMMs up to 48GB each and one or two PCIe Gen4 x4 M.2 2242 or 2280 SSDs; no memory or storage is included.

Can I keep my 1Gbps switch and older USB 3.0 peripherals while using the 4X4 BOX-8840U?

Yes, the RTL8111H LAN port negotiates down to 1Gbps, front USB 3.2 Gen2 and two USB 2.0 ports are backward compatible, and HDMI 2.1 works with existing monitors.

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